CN202909347U - Fixed type compressed-air foam fire extinguishing device - Google Patents
Fixed type compressed-air foam fire extinguishing device Download PDFInfo
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- CN202909347U CN202909347U CN 201220585095 CN201220585095U CN202909347U CN 202909347 U CN202909347 U CN 202909347U CN 201220585095 CN201220585095 CN 201220585095 CN 201220585095 U CN201220585095 U CN 201220585095U CN 202909347 U CN202909347 U CN 202909347U
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Abstract
The utility model discloses a fixed type compressed-air foam fire extinguishing device. When a fire occurs in a protection zone, a fire detector alarms, a fire detection controller starts a water pump, a foam liquid in a pressure foam liquid storage tank is mixed with water by a foam proportion mixer and is sent to a foam generator, at the same time, an electromagnetic cylinder head valve of a gas cylinder is opened by the fire detection controller, then a high-pressure gas in the gas cylinder is introduced into the foam generator, and then compressed air foam output by the foam generator is conveyed to a foam spraying nozzle through a main conveying pipe and a fixed pipe network, so that the foam is sprayed to the protection zone for fire extinguishing protection. The fire extinguishing device utilizes a compressed air foam fire extinguishing technology, has the advantages of adjustable foam expansion rate and foam state, uniform and stable foam, high fire extinguishing efficiency, small foam liquid usage and the like, and is suitable for being popularized and applied to the fields of petroleum, chemical industry, tobacco and the like, as well as specific protection places and protection targets such as garages, aeroplane sheds, oil tanks and the like.
Description
Technical field
The utility model belongs to fixed froth installation, particularly relates to a kind of fixed compressed air foam fire-extinguishing apparatus.
Background technology
The conventional foam fire-fighting technique adopts air suction type foam occurring mode, and what carry in the pipeline is foam solution, produces negative pressure in the foam producer exit position by the foam solution jet, thereby air amount forms foam.And the compressed air foam extinguishing technology is to adopt initiatively the mode of injecting compressed air in the foam solution, and what carry in pipeline is the fire foam that fully foams.
It is finer and smoother, even that the compressed air foam extinguishing technology has foaming structure, and foam stability is high more, thereby greatly improved the fire extinguishing effectiveness of system, saved the consumption of fire foam and water.In addition, the compressed air foam extinguishing technology is to produce foam by the malleation mode to have low frictional resistance, the controlled characteristics of coefficient of foaming, fed distance and foam parameter that can be suitable according to different object of protection adjustment.Therefore, these unique technique advantages that the compressed air foam extinguishing technology possesses, for its in oil, chemical industry, hangar, garage etc. field and place apply the development space that provides wide.
The extinguishing device of existing application of compressed air foam fire extinguishing technique mainly is the rotating speed with the flow of water or pressure signal control foam solution displacement pump (such as plunger displacement pump, gear pump etc.), realize that foam solution mixes according to a certain percentage with water, with air compressor as source of the gas, and adopt balanced valve to control the flow of air compressor, thereby realize that compressed air mixes with the quantitative of foam solution.Above-mentioned compressed air foam fire-extinguishing apparatus complicated structure, involve great expense, operation and maintenance requirement be very high; be mainly used at present on the portable fire extinguishing equipment such as fire fighting truck, have no the fixed fire-extinguishing unit that is applicable to for specific protection place and object of protection.
In addition, the extinguishing device of above-mentioned application of compressed air foam fire extinguishing technique generally adopts the plenum system of air compressor and the type that defines Compressed Gas can only be air, and can't use other gas, such as the nitrogen with inerting fire extinguishing function, argon gas, carbon dioxide gas etc., this has affected the effect of compressed air foam extinguishing technology to a certain extent.
Summary of the invention
The purpose of this utility model be for solve present compressed air foam extinguishing technology only be applied to the technical problem of the movable type such as fire fighting truck fire extinguishing equipment and provide a kind of simple in structure, use and maintenance require lower, foam state is adjustable, and can use according to demand the fixed compressed air foam fire-extinguishing apparatus of dissimilar sources of the gas.
The utility model is taked following technical scheme for achieving the above object: this fixed compressed air foam fire-extinguishing apparatus comprises water pump, the pressure foam liquid storage tank, foam producer and detection controller and fire detector thereof, feature is, described pressure foam liquid storage tank is made of closed tank and the capsule that is sealedly attached to the closed tank inwall, the bottom surface of closed tank is provided with the water pipe that connects water pump, its outlet of pressure foam liquid storage tank is provided with flow control valve, the Flow-rate adjustment valve outlet port is connected with the foam solution import of pressure type foam proportioner, the water inlet of exit of pump and pressure type foam proportioner joins, its bottle electromagnetic valve outlet of the gas bomb of this device connects pressure-reducing valve and check valve successively, described check valve outlet is connected in the gas feed of foam producer, described foam proportioner outlet is connected in the foam solution input pipe of foam producer, described foam producer outlet is connected with the fire foam main feedline, this main feedline is connected with the foam relieving mechanism in specific protection place, described specific protection place is provided with fire detector, the signal of telecommunication of its output is delivered to switching value detection controller, and the control end of a bottle magnetic valve of the automatically controlled power switch of water pump and gas bomb is connected with detection controller control output end.
The utility model can also be taked following technical measures:
Described water pump adopts the fire-fighting centrifugal pump, and discharge pressure is 0.4～1.2Mpa.
Described gas bomb is the gas bomb group that is made of gas bomb arranged side by side, and a bottle electromagnetic valve outlet of each gas bomb all is connected in the house steward of confluxing, and the house steward of confluxing connects pressure-reducing valve and check valve successively, and the described house steward of confluxing is provided with safety relief valve.
Described foam producer is by the gas-liquid mixed chamber, foam generating chamber and gas liquid ratio adjustment column plug form, shell consists of the gas-liquid mixed chamber with the Venturi tube that is engaged in outer casing inner wall, the gas feed that is arranged at shell is corresponding with the air chamber that the Venturi tube outer recess consists of, Venturi tube is distributed with the pore that is communicated with air chamber and gas-liquid mixed chamber, the pore gross area is greater than the gas feed sectional area of shell, the foam solution input pipe is connected with the rear end of shell and has the 30-45 ° of angle of cut with housing axis, the rear end of shell seal is provided with corresponding Venturi tube port and adjusts plunger along the gas liquid ratio that the Venturi tube axis moves, the front end of shell arranges foam chamber, foam chamber is made of tandem flow-disturbing orifice plate in tube-like envelope and the tube-like envelope, and the outlet of foam chamber is connected with the main feedline of carrying fire foam to specific protection place.
The foam relieving mechanism in described specific protection place is the fixedly pipe network that is arranged symmetrically with centered by fire foam main feedline end, and fixedly the end of respectively managing of pipe network is provided with foam nozzle, and described foam nozzle is deluge system or automatic sprinkler.
The foam relieving mechanism in described specific protection place is that oil tank protects on the special-purpose liquid, foam releasing tube under the liquid.
The beneficial effects of the utility model and advantage are: this fixed compressed air foam fire-extinguishing apparatus is the concrete device that adopts the compressed air foam extinguishing technology, this device is except the advantage with compressed air foam extinguishing technology, expensive displacement pump and complicated automatic control system have also been saved, make this apparatus structure advantages of simple, cheap, operation and maintenance is convenient, can also make the Compressed Gas kind variation of gas bomb, in order to select applicable gas according to the protection object in specific protection place.The utility model is compared with existing conventional foam fire extinguishing system; have the advantages such as coefficient of foaming and foam state are adjustable, foam is uniform and stable, fire extinguishing effectiveness is high, the foam solution consumption is few; can adopt on spray, the liquid and to spray and the mode such as subsurface injection, be suitable in the field such as oil, chemical industry, tobacco and the specific protection place such as garage, hangar and object of protection are applied.
Description of drawings
Accompanying drawing 1 is the example structure schematic diagram.
Accompanying drawing 2 is foam producer structural representation among Fig. 1.
Accompanying drawing 3 is one of flow-disturbing orifice plate schematic diagram in Fig. 2 foam producer.
Accompanying drawing 4 is two schematic diagrames of flow-disturbing orifice plate in Fig. 2 foam producer.
Mark among the figure: 1 water pump, 2 pressure foam liquid storage tanks, 2-1 capsule, 2-2 water, 2-3 foam solution, 3 flow control valves, 4 foam proportioners, 5 gas bombs, 6 bottles of magnetic valves, 7 house stewards of confluxing, 7-1 safety relief valve, 8 pressure-reducing valves, 9 check valves, 10 foam producers, 10-1 foam solution input pipe, the 10-2 gas feed, 10-3 shell, 10-4 the first flow-disturbing orifice plate, 10-5 the second flow-disturbing orifice plate, 10-6 tube-like envelope, 10-7 Venturi tube, the 10-7-1 pore, the 10-8 gas liquid ratio is adjusted plunger, 10-9 seal, the 10-10 screw rod, 11 main feedlines, 12 fixing pipe networks, 13 foam nozzles, 14 fire detectors, 15 detection controllers.
The specific embodiment
Further specify the utility model below in conjunction with embodiment and accompanying drawing thereof.
Embodiment as shown in Figure 1, this fixed compressed air foam fire-extinguishing apparatus comprises water pump 1, pressure foam liquid storage tank 2, foam producer 10 and detection controller 15 and fire detector 14 thereof.The outlet of pressure foam liquid storage tank 2 is provided with flow control valve 3, and flow control valve 3 outlets are connected with the foam solution import of pressure type foam proportioner 4, and the water inlet of water pump 1 outlet and pressure type foam proportioner 4 joins.The pressure foam liquid storage tank 2 of embodiment is made of with the capsule 2-1 that is sealedly attached to the closed tank inwall closed tank, and the bottom surface of closed tank is provided with the water pipe that connects water pump 1.
The pressure foam liquid storage tank 2 of embodiment is the water 2-2 from water pump 1 below capsule 2-1, foam solution 2-3 more than the capsule 2-1, the water 2-2 that has pressure after water pump 1 starts enters respectively concentrated tank 2 and pressure type foam proportioner 4, when hydraulic pressure is higher than pressure type foam proportioner foam solution inlet pressure, capsule is squeezed and then foam solution is input to foam proportioner and mixes with water, flow by control valve 3 control foam solutions, thereby realize foam solution and quantitative mixing of water form foam solution, the mixing ratio adjustable range of foam solution and water is 0.5%～6%.The water pump 1 of embodiment adopts the fire-fighting centrifugal pump, and discharge pressure is 0.4～1.2Mpa.
This device is provided with gas bomb 5, and is to consist of the gas bomb group by gas bomb 5 arranged side by side, and a bottle magnetic valve 6 outlets of each gas bomb all are connected in the house steward 7 of confluxing, and house steward's 7 outlets of confluxing connect pressure-reducing valve 8 and check valve 9 successively, and the house steward 7 of confluxing is provided with safety relief valve 7-1.Each gas bomb of gas bomb group also can store nitrogen with inerting fire extinguishing function, argon gas, carbon dioxide gas etc.A bottle magnetic valve 6 of each gas bomb is fire-fighting special container valve, and its control mode is power type, air-driven type or mechanical type.
As shown in Figure 1, 2, check valve 9 outlets are connected in the gas feed 10-2 of foam producer 10, and the outlet of foam proportioner 4 is connected in the foam solution import 10-1 of foam producer 10.
The foam producer 10 of present embodiment is comprised of gas-liquid mixed chamber, foam generating chamber and gas liquid ratio adjustment column plug 10-8, shell 10-3 and the Venturi tube 10-7 that is engaged in outer casing inner wall consist of the gas-liquid mixed chamber, the gas feed 10-2 that is arranged at shell 10-3 is corresponding with the air chamber that the Venturi tube outer recess consists of, Venturi tube 10-7 is distributed with the pore 10-7-1 that is communicated with air chamber and gas-liquid mixed chamber, air vent aperture 0.5mm～3mm, the pore gross area is greater than the gas feed sectional area of shell.
The foam solution input pipe 10-1 of embodiment is connected with the rear end of shell 10-3 and has the 30-45 ° of angle of cut with housing axis.
The rear end of shell 10-3 sealing is provided with corresponding Venturi tube 10-7 port and adjusts plunger 10-8 along the gas liquid ratio that the Venturi tube axis moves, the screw rod 10-10 that moves through that this gas liquid ratio is adjusted plunger realizes, is provided with sealing ring 10-9 between the rear end of screw rod 10-10 and shell 10-3 sealing.
The position that mobile gas liquid ratio is adjusted plunger can change the input quantity that gas liquid ratio is adjusted the interval between plunger and the Venturi tube 10-7 port and then adjusted foam solution.
Shown in Fig. 2,3,4, the front end of the shell 10-3 of foam producer 10 arranges foam chamber, foam chamber is made of front and back the first flow-disturbing orifice plate 10-4 and the second flow-disturbing orifice plate 10-5 alternately in tube-like envelope 10-6 and the tube-like envelope, the curve blend stop that the first flow-disturbing orifice plate 10-4 has circle distribution, the straight line blend stop that the second flow-disturbing orifice plate 10-5 has circle distribution and intersects, front and back first, second flow-disturbing orifice plate alternately can form random pore channel, makes foam solution fully mix the formation compressed-air foam with gas.
First, second flow-disturbing orifice plate of embodiment also can adopt one or more combinations in X-type in JB/T 7660 standards, the L-type.
As shown in Figure 1, 2, the foam chamber outlet of foam producer 10 is connected with the main feedline 11 of carrying fire foam to specific protection place, main feedline 11 is connected with the fixedly pipe network 12 of carrying fire foam, fixedly pipe network 12 is arranged symmetrically with centered by main feedline 11 ends, so as fixedly pipe network 12 respectively to manage terminal fire foam pressure basically identical.
Carry the end of respectively managing of the fixedly pipe network 12 of fire foam to be provided with foam nozzle 13, foam nozzle is deluge system or automatic sprinkler.
Main feedline 11 shown in Figure 1 also can connect oil tank and protect with foam releasing tube (not shown) on the liquid, under the liquid.
As shown in Figure 1, specific protection place is provided with fire detector 14, the signal of telecommunication of its output is delivered to detection controller 15, embodiment selects switching value detection controller, and the control end of the electromagnetism bottle valve 6 of water pump 1 automatically controlled power switch and gas bomb 5 is connected with switching value detection controller control output end.
Below the concise and to the point narration course of work of the present utility model: when the zone of protection breaking out of fire, fire detector 14 is reported to the police, detection controller 15 starts water pump 1 water supply start, foam solution through foam proportioner with send foam producer after water mixes, meanwhile, detection controller 15 is opened the electromagnetism bottle valve of gas bomb, gases at high pressure in the gas bomb pass into foam producer, the compressed-air foam of foam producer output by main feedline 11 and fixedly pipe network 12 be transported to foam nozzle 13 and be ejected into the zone of protection protection of putting out a fire.
Claims (6)
1. fixed compressed air foam fire-extinguishing apparatus, comprise water pump, the pressure foam liquid storage tank, foam producer and detection controller and fire detector thereof, it is characterized in that: described pressure foam liquid storage tank is made of closed tank and the capsule that is sealedly attached to the closed tank inwall, the bottom surface of closed tank is provided with the water pipe that connects water pump, its outlet of pressure foam liquid storage tank is provided with flow control valve, the Flow-rate adjustment valve outlet port is connected with the foam solution import of pressure type foam proportioner, the water inlet of exit of pump and pressure type foam proportioner joins, its bottle electromagnetic valve outlet of the gas bomb of this device connects pressure-reducing valve and check valve successively, described check valve outlet is connected in the gas feed of foam producer, described foam proportioner outlet is connected in the foam solution input pipe of foam producer, described foam producer outlet is connected with the fire foam main feedline, this main feedline is connected with the foam relieving mechanism in specific protection place, described specific protection place is provided with fire detector, the signal of telecommunication of its output is delivered to switching value detection controller, and the control end of a bottle magnetic valve of the automatically controlled power switch of water pump and gas bomb is connected with detection controller control output end.
2. fixed froth installation according to claim 1 is characterized in that: described water pump adopts the fire-fighting centrifugal pump, and discharge pressure is 0.4～1.2Mpa.
3. fixed froth installation according to claim 1, it is characterized in that: described gas bomb is the gas bomb group that is made of gas bomb arranged side by side, a bottle electromagnetic valve outlet of each gas bomb all is connected in the house steward of confluxing, the house steward of confluxing connects pressure-reducing valve and check valve successively, and the described house steward of confluxing is provided with safety relief valve.
4. fixed froth installation according to claim 1, it is characterized in that: described foam producer is by the gas-liquid mixed chamber, foam generating chamber and gas liquid ratio adjustment column plug form, shell consists of the gas-liquid mixed chamber with the Venturi tube that is engaged in outer casing inner wall, the gas feed that is arranged at shell is corresponding with the air chamber that the Venturi tube outer recess consists of, Venturi tube is distributed with the pore that is communicated with air chamber and gas-liquid mixed chamber, the pore gross area is greater than the gas feed sectional area of shell, the foam solution input pipe is connected with the rear end of shell and has the 30-45 ° of angle of cut with housing axis, the rear end of shell seal is provided with corresponding Venturi tube port and adjusts plunger along the gas liquid ratio that the Venturi tube axis moves, the front end of shell arranges foam chamber, foam chamber is made of tandem flow-disturbing orifice plate in tube-like envelope and the tube-like envelope, and the outlet of foam chamber is connected with the main feedline of carrying fire foam to specific protection place.
5. fixed froth installation according to claim 1, it is characterized in that: the foam relieving mechanism in described specific protection place is the fixedly pipe network that is arranged symmetrically with centered by fire foam main feedline end, fixedly the end of respectively managing of pipe network is provided with foam nozzle, and described foam nozzle is deluge system or automatic sprinkler.
6. fixed froth installation according to claim 1, it is characterized in that: the foam relieving mechanism in described specific protection place is that oil tank protects on the special-purpose liquid, foam releasing tube under the liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585095 CN202909347U (en) | 2012-11-08 | 2012-11-08 | Fixed type compressed-air foam fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585095 CN202909347U (en) | 2012-11-08 | 2012-11-08 | Fixed type compressed-air foam fire extinguishing device |
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| CN202909347U true CN202909347U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220585095 Expired - Lifetime CN202909347U (en) | 2012-11-08 | 2012-11-08 | Fixed type compressed-air foam fire extinguishing device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492007A (en) * | 2014-11-27 | 2015-04-08 | 公安部天津消防研究所 | Method and spray head for spraying and discharging compressed air foams |
| CN104606811A (en) * | 2014-12-19 | 2015-05-13 | 中联重科股份有限公司 | Venturi tube, foam ratio mixing controlling system and fire fighting truck |
| CN104958847A (en) * | 2015-06-09 | 2015-10-07 | 公安部天津消防研究所 | Compressed air foam fire extinguishing device for large floating roof storage tank |
| CN105080004A (en) * | 2015-09-11 | 2015-11-25 | 中国石油化工股份有限公司 | Foam generation device |
| CN106730549A (en) * | 2017-03-16 | 2017-05-31 | 成都启特安全技术有限责任公司 | A kind of free-standing fire alarm fire extinguishing end-equipment |
| CN107823821A (en) * | 2017-12-07 | 2018-03-23 | 国网湖南省电力有限公司 | A kind of fine water mist fire-extinguishing system and its application process that can accurately mix extinguishing fluid in real time |
| CN107982835A (en) * | 2018-01-18 | 2018-05-04 | 山东天康达安防科技有限公司 | A kind of automatic removable perfluor hexanone fire extinguishing system of search positioning |
| CN108014440A (en) * | 2018-01-18 | 2018-05-11 | 山东天康达安防科技有限公司 | A kind of automatic removable compressed air foam fire extinguishing system of search positioning |
| CN108014439A (en) * | 2017-12-07 | 2018-05-11 | 国网湖南省电力有限公司 | A kind of fine water mist fire-extinguishing system and its application process that application can be mixed with extinguishing fluid |
| CN108868714A (en) * | 2017-05-08 | 2018-11-23 | 中国石油化工股份有限公司 | Chemical solution speed matches device and method |
| CN109481871A (en) * | 2018-10-19 | 2019-03-19 | 中国矿业大学 | Vehicle-mounted big flow fire-fighting foams fluid mixing system |
| CN112221045A (en) * | 2020-10-17 | 2021-01-15 | 湖州仁丰进出口有限公司 | Ship protection fire extinguishing device |
| CN112295148A (en) * | 2020-09-28 | 2021-02-02 | 九江中船长安消防设备有限公司 | Air foam fire extinguishing device with high stability for warships |
| CN112700910A (en) * | 2020-09-10 | 2021-04-23 | 湖南金缆电工科技有限责任公司 | Cable for ships and warships and manufacturing method thereof |
| CN114733106A (en) * | 2022-04-02 | 2022-07-12 | 山西潞安环保能源开发股份有限公司 | Automatic foam injection system and method for preventing and controlling cutting sparks of coal mining machine |
| CN115591152A (en) * | 2022-09-09 | 2023-01-13 | 中国空气动力研究与发展中心空天技术研究所（Cn） | Remote gas fire extinguishing and explosion suppression system applied to open space and application method thereof |
-
2012
- 2012-11-08 CN CN 201220585095 patent/CN202909347U/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492007A (en) * | 2014-11-27 | 2015-04-08 | 公安部天津消防研究所 | Method and spray head for spraying and discharging compressed air foams |
| CN104606811A (en) * | 2014-12-19 | 2015-05-13 | 中联重科股份有限公司 | Venturi tube, foam ratio mixing controlling system and fire fighting truck |
| CN104958847B (en) * | 2015-06-09 | 2018-05-15 | 公安部天津消防研究所 | Compressed air foam fire-extinguishing apparatus for large-scale floating roof tank |
| CN104958847A (en) * | 2015-06-09 | 2015-10-07 | 公安部天津消防研究所 | Compressed air foam fire extinguishing device for large floating roof storage tank |
| CN105080004A (en) * | 2015-09-11 | 2015-11-25 | 中国石油化工股份有限公司 | Foam generation device |
| CN106730549A (en) * | 2017-03-16 | 2017-05-31 | 成都启特安全技术有限责任公司 | A kind of free-standing fire alarm fire extinguishing end-equipment |
| CN108868714A (en) * | 2017-05-08 | 2018-11-23 | 中国石油化工股份有限公司 | Chemical solution speed matches device and method |
| CN107823821A (en) * | 2017-12-07 | 2018-03-23 | 国网湖南省电力有限公司 | A kind of fine water mist fire-extinguishing system and its application process that can accurately mix extinguishing fluid in real time |
| CN108014439A (en) * | 2017-12-07 | 2018-05-11 | 国网湖南省电力有限公司 | A kind of fine water mist fire-extinguishing system and its application process that application can be mixed with extinguishing fluid |
| CN107823821B (en) * | 2017-12-07 | 2023-01-13 | 国网湖南省电力有限公司 | Water mist fire extinguishing system capable of accurately mixing fire extinguishing liquid in real time and application method thereof |
| CN107982835B (en) * | 2018-01-18 | 2022-11-15 | 山东天康达安防科技有限公司 | Automatic search and location movable perfluorohexanone fire extinguishing system |
| CN108014440A (en) * | 2018-01-18 | 2018-05-11 | 山东天康达安防科技有限公司 | A kind of automatic removable compressed air foam fire extinguishing system of search positioning |
| CN107982835A (en) * | 2018-01-18 | 2018-05-04 | 山东天康达安防科技有限公司 | A kind of automatic removable perfluor hexanone fire extinguishing system of search positioning |
| CN109481871A (en) * | 2018-10-19 | 2019-03-19 | 中国矿业大学 | Vehicle-mounted big flow fire-fighting foams fluid mixing system |
| CN112700910A (en) * | 2020-09-10 | 2021-04-23 | 湖南金缆电工科技有限责任公司 | Cable for ships and warships and manufacturing method thereof |
| CN112295148B (en) * | 2020-09-28 | 2021-12-28 | 九江中船长安消防设备有限公司 | Air foam fire extinguishing device with high stability for warships |
| CN112295148A (en) * | 2020-09-28 | 2021-02-02 | 九江中船长安消防设备有限公司 | Air foam fire extinguishing device with high stability for warships |
| CN112221045A (en) * | 2020-10-17 | 2021-01-15 | 湖州仁丰进出口有限公司 | Ship protection fire extinguishing device |
| CN114733106A (en) * | 2022-04-02 | 2022-07-12 | 山西潞安环保能源开发股份有限公司 | Automatic foam injection system and method for preventing and controlling cutting sparks of coal mining machine |
| CN115591152A (en) * | 2022-09-09 | 2023-01-13 | 中国空气动力研究与发展中心空天技术研究所（Cn） | Remote gas fire extinguishing and explosion suppression system applied to open space and application method thereof |
| CN115591152B (en) * | 2022-09-09 | 2023-10-24 | 中国空气动力研究与发展中心空天技术研究所 | Remote gas fire-extinguishing explosion-suppressing system applied to open space and application method thereof |
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